EP 4053512 A4 20231115 - PROPAGATION TIME MEASUREMENT DEVICE
Title (en)
PROPAGATION TIME MEASUREMENT DEVICE
Title (de)
AUSBREITUNGSZEITMESSVORRICHTUNG
Title (fr)
DISPOSITIF DE MESURE DE TEMPS DE PROPAGATION
Publication
Application
Priority
- JP 2019196256 A 20191029
- JP 2020036323 W 20200925
Abstract (en)
[origin: EP4053512A1] A device determines a propagation time of an acoustic signal through cross-correlation analysis between a transmission signal and a reception signal. The device generates the transmission signal to satisfy (1) a ratio of a height of a peak other than a maximum peak in an autocorrelation function of the transmission signal to a height of the maximum peak being 0.8 or less and (2) a duration of the transmission signal being at least five times a shortest period of the transmission signal or at least 20 times a half width at half maximum of the autocorrelation function of the transmission signal.
IPC 8 full level
G01F 1/66 (2022.01); G01F 1/667 (2022.01)
CPC (source: CN EP US)
G01F 1/66 (2013.01 - CN); G01F 1/662 (2013.01 - EP); G01F 1/667 (2013.01 - US); G01F 1/667 (2013.01 - EP)
Citation (search report)
- [XY] JP 2000206133 A 20000728 - BABCOCK HITACHI KK
- [Y] JP 2017187310 A 20171012 - SONIC CORP
- [Y] US 6546810 B1 20030415 - BEAUDUCEL CLAUDE [FR], et al
- [Y] JP H08110376 A 19960430 - FUJI ELECTRIC CO LTD
- [Y] JP 2013185891 A 20130919 - TOKYO INST TECH
- [A] US 6658944 B2 20031209 - MELNIKOV VLADIMIR [RU], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 4053512 A1 20220907; EP 4053512 A4 20231115; CN 114599940 A 20220607; JP 2021071307 A 20210506; TW 202117289 A 20210501; TW I759886 B 20220401; US 2022291026 A1 20220915; WO 2021084985 A1 20210506
DOCDB simple family (application)
EP 20882140 A 20200925; CN 202080073685 A 20200925; JP 2019196256 A 20191029; JP 2020036323 W 20200925; TW 109133980 A 20200930; US 202017769888 A 20200925